Rocker-arm.



S. H. PAGE.

ROCKER ARM. APPLICATION FILED 02c. 11. 191's.

1,2Q5Q27 Patented May 8, 1917.

N STATlEg PATENT STANLEY H. PAGE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 UNION GAS ENGINE COMPANY, OF OAKLAND, CALIFORNIA, A. CORPORATION OF CALIFORNIA.

ROCKER-ARM.

Application filed. December 11, 1916.

To all whom it may concern:

Be it known that I, STANLEY H. PAGE, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented certain new and useful Improvements in Rocker- Arms, of which the following is a specification.

The present invention relates to rocker arms adapted to operate the valves of an engine, particularly of the internal combustion type.

The object of the invention is to provide a rocker arm of such a form as to permit adequate lubrication of its fulcrum hearing. The invention is particularly adaptable to the over-head type of valve construction as used upon vertical multi-cylinder engines, but it is to be understood that its use is not restricted in this regard, and that it may be adapted to any situation where the employment of a rocker arm is necessary or desirable.

In order to comprehend the invention, reference should be had to the'accompanying drawings, wherein Figure 1 is a transverse part sectional view showing my rocker arm as applied to the cylinder-head of an engine having an overhead cam shaft.

Fig. 2 is a side elevation of my rocker arm.

Fig. 3 is a plan view of the same.

In the drawings, the reference numeral 1 designates a portion of a suitable bracket or housing, in the present instance supported by the head of the engine cylinder, not shown in the drawings. Carried by said bracket 1 is a lower journal member 2. An upper member 8 serves as a cap for said journal, and as a cover plate for the housing 1.

The rocker arm is carried in the journal formed between the members 2 and 3, and consists of a shaft portion 4, preferably hollow for the sake of economy of weight, which rests within said journal, and later ally projecting arms 5 and 6. The arm 5 is preferably double, as shown in Fig. 3, and carries a cam following roller 8, Fig. 1, journaled upon a pin 7, and adapted to follow a cam 9 carried by the cam shaft 10, the latter being suitably mounted within thedl housing formed by the members 1, 2 an 3.

Specification of Letters Patent.

Patented May 8, 1917 Serial no. 136,153.

from the shaft 4-. in a substantially vertical direction, and then curving downwardly at an inclination, finally terminating in a tappet 11 adapted to bear against the outer projecting end of the valve stem, indicated at 1:2 in Fig. 1. The journal formed by the members 2 and 3 is thus in the form of a continuous trough, whose outer wall, shown at 13 in Fig. l, prevents the oil used for the lubrication of the shaft a from working out and soiling the exterior of the engine; and on account of the shape and position of the arm 6, the oil cannot run down said arm, and the valve is thereby kept clean and dry. The only avenue of escape for said oil is by the aperture 14 through which the arm 5 operates, and which leads said oil into the cam shaft housing, where it may serve as a lubricant for the cam shaft. Tt isunderstood that oil may be introduced into the journal of the rocker arm shaft a: in any convenient man ner not shown in the drawings.

It is obvious that my rocker arm is not restricted to the construction illustrated, involving the use of an over-head cam shaft. Said shaft may be positioned at a distance from the rocker arm, and a lifter rod interposed therebetween, such being a well known type of valve operating mechanism, and therefore not illustrated in the drawings. In fact, changes, within the scope of the claims hereto appended, may be made in the preferred form and construction of my rocker arm, as herein described and herewith illustrated, without departing from the spirit of the invention.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is 1. In combination with an apertured housing a rocker arm for inclosed valve operating mechanism comprising a cylindrical shaft portion adapted to oscillate within a journal located within said housing, an arm extending laterally therefrom within said housing, by means of which said shaft is oscillated, and a downwardly curved arm extending from said shaft in an upward direction, the upwardly directed portion thereof extending through the aperture of said housing, and the end of said curved arm lying in substantially the same horizontal plane as the end of the first mentioned 2. A rocker arm comprising a shaft portion and a pair of oppositely disposed arms extending laterally therefrom, one of said arms springing from the upper side of said shaft portion, and thence curving outwardly and downwardly, and an apertured housing for partially inclosing the same, the upwardly directed portion of said curved arm extending through the aperture of said housing. I

3. A rocker arm comprising a shaft portion and a pair of oppositely disposed arms extending laterally therefrom one of said arms springing from the upper side of said shaft portion, and thence curving outwardly and downwardly; and. an oil retaining jour- -nal witl1in which said shaft portion is adapted to oscillate, said journal having its bottom and one side extending continuouslythe entire length of said shaft portion, the continuous side of said journal being extended upwardly and lying within the curve of said arm.

4. In a valve operating mechanism, a housing having a substantially vertically disposed aperture in its upper portion; a

Copies of this patent may be obtained for five cents each, by addressing the Commissiener of Patents,

journal formed within said housing below said aperture; and a rocker arm comprlslng a shaft port1on mounted for .OSClllfitlOll within said journal, and a pair of oppositely disposed arms extending therefrom, one of said arms extending upwardly through' the aperture in said housing and thence curving outwardly and downwardly outside said housing.

STANLEY H. PAGE.

' Witnesses:

O. H. FIsGI-IER, THEO. IV. EMERSON.

Washington, D. G. 

